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Update
Hi ya buddy
Well mines coming along nicely..20 litres is what you will need,, I used all of it and a bit more though the domes a bigger,,Im puuting my rollers on the dome itself, only three places, a lot more stable I figure. one set under the slit where all the reenforcing is, the other two sets equispaced, the stresses of one set negated by the other two,,set it up on block and tried my theory..
keeps the runners for the door perfectly parallel. Im using A single track over the back of the dome and two runners on the bottom of the door,,,3 points again . less chance of jamming. The bottom ring on the inside has a continuous lenght of 3 mm sheet metal screwed twice at 300 centres, and glued...Like a big round fitch plate...will post pics after gelcoat, when its all shiny and white,,,LOL..
Keep in touch, our projects are very similar...
Shawn
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